Music-leaf turner.



J. H. JORDAN.

MUSIO LEAF TURNER.

APPLICATION FILED AUG. 7, 1912.

1,090,720.- Patented Max:171 1914.

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J. H. JORDAN. MUSIC LEAF TURNER.

APPLICATION FILED AUG. 7, 1912.

1,090,720. Patented Mar. 17, 1914.

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J. H. JORDAN.

MUSIC LEAP TURNER.

APPLICATION FILED AUG. '7, 1912. 1,090,720. Patented Mar.17,1914.

4 SHEETS-SHEET 3.

J. H. JORDAN.

MUSIC LEAF TURNER.

APPLICATION FILED AUG. 7, 1912.

Patented Mar. 17, 1914.

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witnaooeo UNITED STATES PATENT OFFICE.

JAMES H. JORDAN, OF 1VIADISO1\T, WISCONSIN.

MUSIC-LEAF TURNER.

To all whom it may concern:

Be it known that I, J AMES H. JORDAN, a citizen of the United States, residing at Madison, in the county of Dane and State of Wisconsin, have invented new and useful Improvements in Music-Leaf Turners, of which the following is a specification.

This invention relates to music leaf turners and the object of the invention is to provide a simple and efficient device whereby a plurality of sheets may be successively turned from one position to another upon the rack by the operation of a single lever.

Further objects of this invention will ap pear as the following specific description is read in connection with the accompanying drawings, which form a part of this application, and in which Figure 1 is a front elevation of my improved music leaf turner, showing the fingers in initial position. Fig. 2 is a top plan View of the same. Fig. 3 is a side elevation of the same. Fig. 4 is a Vertical sectional view on the line H of Fig. 2. Fig. 5 is a sectional view on the line 5-5 of Fig. 1. Fig. 6 is a horizontal section on the line 6-6 of Fig. 1. Fig. 7 is a detail vertical section on the line 77 of Fig. 2. Fig. 8 is a detail plan of the operating lever and its connections, the bearing for the shaft of said lever being indicated in section. Fig. 9 is a detail elevation of a modified con struction of the plunger rod and its connections and showing a solenoid in vertical section for operating said rod. Fig. 10 is a detail sectional view taken through the magnet shown in Fig. 9. Fig. 11 is a diagrammatic view showing the circuits employed in the type of device illustrated in Figs. 9 and 10.

In the specific embodiment of the invention, as illustrated herein, the device is mounted upon the rack l which comprises anopen work frame of metal having a forwardly extending flange 2 at its lower end for supporting sheet music thereon. The rack is also provided with supporting feet 3 and in its center with a clamp a which is adapted to engage the back of'the sheet music, as will be readily understood. The edge of the frame is preferably provided with clips 5 to engage the edge of the back so as to prevent the same from turning with the sheets.

The upper edge of the frame is bent laterally into a rearwardly extending flange 6 Specification of Letters Patent.

Application filed August 7, 1912.

Patented Mar. 17, 1914.

Serial No. 713,857.

which supports the mechanism for turning the sheets of music, as will be hereinafter described. Secured on this flange is a casing 7 in which is slidably mounted a rack bar 8 operated by the pinion 9 which passes through the slot in the casing. This pinion 9 is mounted upon a base 10 secured to the flange 6 and is in mesh with a somewhat larger gear 11 journaled upon a shaft 12 carried by the base 10. Also keyed upon the shaft 11 is a ratchet wheel 13 which is operated by a pawl 14 carried upon a lever 15 which is pivoted upon the shaft 12. The pawl is held in engagement with the ratchet wheel by means of a spring 16 and is provided with a lever 17 by which the same may be disengaged from the ratchet wheel for a purpose to be hereinafter described. The rear end of the lever is held down upon a friction roller 18, carried by the plunger rod 19, by a spring 20 connected to the lever and to the flange 6. The plunger rod is slidably mounted in a bearing 21 and in brackets 22 carried by the rack 1 and is provided on its lower end with another friction roller 23 engaged by the finger 24 forming a part of the operating lever 25. It will be seen that when the operating lever 25 is depressed, the finger 24 will be raised and the gear 11 rotated through the action of the lever, pawl, and ratchet wheel. The rotation of the gear 11 will cause the opposite rotation of the gear 9, and this gear meshing with the rack bar will cause the elevation of the latter element.

The casing is provided with a plurality of pairs of laterally or horizontally extending ears 26, the upper one of which is slotted, as shown at 27. Slidably mounted within these ears are dogs 28 having projections 29 which are adapted to enter a longitudinal slot 30 formed in the rack bar 8. These dogs are normally projected toward the rack bar by means of springs 31 which engage pins 31 carried by the dogs and operating in the slots 27. These dogs are provided with V- shaped notches 32 which are adapted to be engaged by the V-shaped projections 38 carried upon the finger disks 3st. The finger disks are arranged in pairs upon a vertical shaft 35, each pair being integrally connected to a sheet throwing finger 36 preferably provided with the spring pressed sheet clamp 37 at its lower end. These disks are journaled upon the shaft 35 and the upper one only of each pair is provided with a V- shaped projection 33 for engagement by one of the dogs 28.

Pivoted on the shaft- 35 above and below the disks 34 is an operating yoke 38 which, when manually moved by the lever 39 connected thereto, will return all of the fingers to normal, as will be hereinafter described. Preferably, the operating rod 19 is provided with adjusting nuts 40 which engage the bearing 21 to limit the upward movement thereof and subsequently the movement of the rack bar.

In the operation of the device, the sheet of music is placed upon the rack, the frame 1, and the back thereof clamped in the clamp 4, the edges of the back being preferably inserted between the clips 5. Each sheet is then secured between the fingers 36 and their clamping members 37. lVhen it is desired to turn the sheet, it being of course understood that the first sheet is connected to the lowest finger, the lever 25 is depressed, which action elevates the rod 19 until the nuts 40 engage the bearing 21. The elevation of the rod 19 raises the outer end of the lever, causes the pawl 14 to rotate the ratchet wheel 13 and through the shaft 12, the gear 11. The rotat-ion'of the gear 11 causes the rotation of the gear 9 and the elevation of the rack bar. When the rack bar has been elevated a sufiicient distance, the lower dog drops into the slot 30, thus releasing the lower finger 36. A further movement of the rack bar in the same direction will bring the slot into posi tion to be entered by the neXt superposed dog, whereby the second finger 36 may be operated. It will be of course understood that as many fingers as are desired may be placed upon the shaft 35 and operated in a similar manner. In order to turn these fingers, spiral springs 41 are arranged between the pairs of disks of each finger and are each connected at one end to the shaft and at the opposite end to one of the disks as indicated in dotted lines in Fig. 7. To return all the fingers to normal position the yoke 38 is swung manually by means of its lever 39 and caused to engage the fingers and turn them to normal or initial position, the lever 17 is then operated to disengage the pawl 14 from the ratchet wheel 13 and the rack bar is then depressed to the lower limit of its movement and caused to successively throw the dogs 28 outwardly so that the notches of the said dogs become engaged by the projections 33 on the disks 34, the said yoke being manually held until the said disks have been thus locked by the dogs.

In the modifications shown in Figs. 9, 10 and 11, there is secured to the back of the rack 1 suitable brackets 41 in which is mounted an electromagnet 42 in the form of a solenoid. The core 43 of the solenoid is connected directly to the operating rod 19 so that when the solenoid is energized, as will be hereinafter described, the rod will be elevated to operate the parts in the manner before described for the lever 25. Mounted upon the rack is a push button switch 44 which controls the circuit of the magnet, as will be readily understood. This circuit includes the conductors 45 and 46 and a suitable source of current such as the battery B. This battery may be secured upon the back of the rack or the magnet may be wound to operate on an ordinary house lighting circuit.

What is claimed is 1. In a music leaf turner, a music supporting frame, a shaft carried thereby, a plurality of sheet turning fingers j ournaled on the shaft and each having a holding member, a guiding and supporting element, dogs mounted for movement in the guiding and supporting element to engage and disengage the holding members of the fingers, springs to move the dogs to disengaging position, and a rod movable across the paths of the dogs to engage the latter and normally hold them in engaged position with respect to the holding members and against the tension of their springs, said rod having a longitudinal slot to successively receive the dogs when the rod is moved in one direction, to permit the dogs to successively disengage the holding members of the fingers.

2. In a music leaf turner, a music supporting frame, a shaft carried thereby, a plurality of sheet turning fingers journaled on the shaft and each having a holding mem her, a guiding and supporting element, dogs mounted for movement in the guiding and supporting element to engage and disengage the holding members of the fingers, springs to move the dogs to disengaging position, and a rod movable across the paths of the dogs to engage the latter and normally hold them in engaged position with respect to the holding members and against the tension of their springs, said rod having a longitudinal slot to successively receive the dogs when the rod is moved in one direction, to permit the dogs to successively disengage the holding members of the fingers, and means to operate said rod.

3. In a music leaf turner, a music supporting frame, a shaft carried thereby, a plurality of sheet turning fingers journaled on the shaft and each having a holding member, means to turn the fingers when their holding members are released, a guiding and supporting element, dogs mounted in the guiding and supporting element for movement therein to engage and disengage the holding members of the fingers, springs to move the dogs to disengaging position, and a rod movable across the paths of thedo-gs to engage the latter and normally hold them in ngaging position with respect to the holding mem- In testimony whereof I aflix my signature bers and against the tension of their springs, in presence of two Witnesses. said rod having a longitudinal slot to suc- JAMES JORDAN cessively receive the dogs When the rod is moved in one direction, to permit the dogs to Witnesses: successively disengage the holding members L. S. LUNDER, of the fingers. A. O. OLMAN.

copies oi this patent my be obtained for flve cents each, by addressing the Commissioner of Patents. Washington, D. G. 

